Improvement in fruit-jars



1. YOUNG.

FRUIT-JARS. No.17Z,Z89. Patented J"a.n.18,1876.

Wiiness es; nvenior,

PETERS BER, WASHINGTON. a c.

UNITED STATES PATE T OFFICE.

JOHN YOUNG, OF AMSTERDAM, NEW YORK.

IMPROVEMENT IN FRUIT-JARS.

Specification forming part of Letters Patent No. 1 72,289, dated January18, 1876; application filed May 26, 1875.

To all whom it'may concern:

Be it known that I, JOHN YOUNG, of Amsterdam, New York, have invented anImprovement in Fruit-Jars, of which the following is a specification:

This invention relates to a simple and expeditious means of securing thesealing-cover upon a fruitjar, and to its easy and speedy opening; andconsists in the employment, in combination with the sealing-cover, of alocking-cap, having a central bearing upon the sealing-cover, anda'circumferential bearing upon inclines formed on the outer surface ofthe neck of the jar.

In the drawing, A represents the jar, having the inclined ribs a formedupon its neck. B is the cover, of glass, porcelain, wood, or othernon-corrosive material, closing the top of the jar, and having a flangefitting within the mouth thereof, to prevent accidental displacement,and a rubber gasket between the v shoulder of the cover and the top ofthe jar.

In the top of the cover is a depression, b, fitted to receive acorresponding inward protuberance in the center of the locking-cap 0,(shown in section,) by means of which the cap and the cover are kept ina proper relation to each other when in use. Within the circumference ofthe cap O, and near its lower edge, are formed the projections 0, equalin number to,

and fitted to engage with, the inclines a on the jar-neck, beneath whichthey press when the cap is placed upon the cover B and turned in theright direction. I propose to make these caps of stiff sheet metal,struck up from a single piece, and to form these several .projections orprotuberances from the body of the cap, which may, for the purpose ofgreater stifi'ness, be beaded or otherwise re-enforced.

It will be seen that, as this cap bears upon the cover at a singlecentral point only, and upon the inclines at, perhaps, three points, thefriction of these parts upon each other is very slight, and,consequently, that the jar may be tightly sealed and readily opened bythe hand without using the lever necessary in the ordinary methods.Again, as the coverB is not turned with the cap in tightening it uponthe jar, there is no friction of the rubber gasket upon the glass,eitherin opening or closing, and no binding of the parts together by theadhesiveness of this rubber, softened by'heat and by the liquids in thejar. The cap serves, also, to protect the cover and the inclines a frominjury, as it embraces the neck and top of the jar, touching them at afew points only; and it may form a very symmetrical finish to the jar bymeeting the outer shoulder thereof below the inclines in a line with theprolongation of the sides of the jar.

Instead of a depression in the cap corresponding to that in the cover,as an equivalent device, the centers of each may be raised above thegeneral level; or a protuberance on the cover may bear upon the plaininner surface of the cap, or one within the cap-may bear upon the plaintop of the cover, for a central bearing; but I prefer the method alreadydescribed. and shown in the drawings.

The projections c in the edge of the cap will engage with the inclinesequally well whether the inclines are formed of a uniform pitch or not;hence, I prefer to give to them a greater pitch at their upper ends, andless as they approach the shoulder of the jar, for the purpose ofobtaining, at the last turn, greater power in tightening the cap, and toprevent accidental loosening from too sharp a pitch.

' I claim as my invention The metallic disk 0, covering the jar-mouthand bearing centrally upon the glass cover, while it clamps the parts Aand B to each other with an elastic gasket interposed between them,substantially as and for the purpose set forth.

JOHN YOUNG.

Witnesses:

GHAs. P. WINEGAR, J. H. HURST.

